Oil-sludge filtration system with aeration pump

Abstract

A system for consolidating and removing contaminate such as paint sludge or oils from a fluid mixture. A contaminate tank receives a supply of the fluid mixture containing contaminate from a source such as a manufacturing line where overspray of paints or cleaning solutions containing washed away oils are collected. A free floating weir floats on the surface of the contaminate tank and mechanically separates and removes contaminate from a surface of the contaminate tank and concentrates the contaminate in a consolidation tank. In the consolidation tanks the contaminate is further separated and collected for disposal.

1. A system for consolidating and removing contaminate such as paint sludge or oils from a fluid mixture, the system comprising:
 a contaminate tank receiving a supply of the fluid mixture containing contaminate; 
 a floating weir free floating on the surface of the contaminate tank for mechanically separating and removing the contaminate from a surface of the fluid mixture collected in the contaminate tank; 
 a consolidation tank for receiving the contaminate from contaminate tank, wherein said consolidation tank includes a surface scraper for collecting contaminate proximate to the surface of the consolidation tank; 
 a contaminate chute operatively associated with the scraper for receiving the contaminate removed by the scraper; 
 a pump screen dividing said contaminate tank into a first section where said fluid mixture enters and a second section where a portion of said fluid mixture exits said contaminate tank; and 
 one or more booth pumps contained in said second section contaminate tank for removing said portion of said fluid mixture. 
 
     
     
       2. The system of  claim 1  wherein said floating weir further comprises:
 a suction box having two or more hinged doors each having a float member connected to said two or more hinged doors; 
 two or more floatation cylinders operably connected to said suction box; and 
 a vacuum hose connected to said suction box for removing contaminate from said suction box. 
 
     
     
       3. The system of  claim 1  further comprising a contaminate treatment device for receiving contaminate from said contaminate chute. 
     
     
       4. The system of  claim 3  wherein the contaminate treatment device is one selected from the group comprising a self dump hopper, conveyorized dryer and centrifuge. 
     
     
       5. A system for removing contaminate including consolidated paint sludge or oils from a fluid mixture, the system comprising:
 a contaminate tank receiving a supply of the fluid mixture containing contaminate; 
 a pump screen dividing said contaminate tank into a first section where said fluid mixture enters and a second section where a portion of said fluid mixture exits said contaminate tank; 
 a first floating weir free floating on the surface of said first section of the contaminate tank for mechanically separating and removing the contaminate from a surface of the fluid mixture collected in said first section; 
 a second floating weir free floating on the surface of said second section of the contaminate tank for mechanically separating and removing the contaminate from a surface of the fluid mixture collected in said second section; 
 a consolidation tank for receiving the contaminate collected by said first floating weir and said second floating weir, wherein said consolidation tank includes a surface scraper for collecting contaminate proximate to the surface of the consolidation tank; and 
 a contaminate chute operatively associated with the scraper for receiving the contaminate removed by the scraper. 
 
     
     
       6. The system of  claim 5  further comprising:
 one or more booth pumps contained in said second section contaminate tank for removing a portion of said fluid mixture. 
 
     
     
       7. The system of  claim 5  wherein said first floating weir and said second floating weir both further comprise:
 a suction box having two or more hinged doors each having a float member connected to said two or more hinged doors; 
 two or more floatation cylinders operably connected to said suction box; and 
 a vacuum hose connected to said suction box for removing contaminate from said suction box. 
 
     
     
       8. The system of  claim 5  further comprising a contaminate treatment device for receiving contaminate from said contaminate chute. 
     
     
       9. The system of  claim 8  wherein the contaminate treatment device is one selected from the group comprising a self dump hopper, conveyorized dryer and centrifuge. 
     
     
       10. A system for removing contaminate including consolidated paint sludge or oils from a fluid mixture, the system comprising:
 a contaminate tank receiving a supply of the fluid mixture containing contaminate; 
 a pump screen dividing said contaminate tank into a first section where said fluid mixture enters and a second section where a portion of said fluid mixture exits said contaminate tank; 
 a stationary weir operably connected to a stationary surface in said first section of the contaminate tank for mechanically separating and removing the contaminate from a surface of the fluid mixture collected in said first section; 
 a floating weir free floating on the surface of said second section of the contaminate tank for mechanically separating and removing the contaminate from a surface of the fluid mixture collected in said second section; 
 a consolidation tank for receiving the contaminate collected by said stationary weir and said floating weir, wherein said consolidation tank includes a surface scraper for collecting contaminate proximate to the surface of the consolidation tank; 
 a contaminate chute operatively associated with the scraper for receiving the contaminate removed by the scraper; and 
 one or more booth pumps contained in said second section of said contaminate tank for removing said portion of said fluid mixture. 
 
     
     
       11. The system of  claim 10  wherein said floating weir further comprises:
 a suction box having two or more hinged doors each having a float member connected to said two or more hinged doors; 
 two or more floatation cylinders operably connected to said suction box; and 
 a vacuum hose connected to said suction box for removing contaminate from said suction box. 
 
     
     
       12. The system of  claim 11  wherein said stationary weir further comprises:
 a suction box having a hinged door having a float member connected to said hinged door; and 
 a vacuum hose connected to said suction box for removing contaminate from said suction box. 
 
     
     
       13. The system of  claim 10  further comprising a contaminate treatment device for receiving contaminate from said contaminate chute. 
     
     
       14. The system of  claim 13  wherein the contaminate treatment device is one selected from the group comprising a self dump hopper, conveyorized dryer and centrifuge. 
     
     
       15. A system for consolidating and removing contaminate such as paint sludge from a fluid mixture, the system comprising:
 a contaminate tank receiving a supply of fluid mixture containing contaminate; 
 a weir positioned on the surface of the contaminate tank for mechanically separating and removing the contaminate from a surface of the fluid mixture collected in the contaminate tank; 
 a consolidation tank for receiving the contaminate from the contaminate tank, wherein said consolidation tank includes a surface scraper for collecting contaminate proximate to the surface of the consolidation tank; 
 a micro-aeration inlet connected to the consolidation tank for inputting contaminate from the contaminate tank to the consolidation tank; 
 a dissolved gas flotation arrangement having a fluid mixture source, a gas source and an aeration pump for creating a dissolved gas mixture from the fluid mixture and gas received from the fluid mixture source and the gas source, wherein said dissolved gas mixture is input into the consolidation tank through the micro-aeration inlet; 
 a contaminate chute arranged for receiving contaminate removed by said surface scraper; 
 a pump screen dividing said contaminate tank into a first section where said fluid mixture enters and a second section where a portion of said fluid mixture exits said contaminate tank; and 
 one or more booth pumps contained in said second section of said contaminate tank for removing said portion of said fluid mixture. 
 
     
     
       16. The system of  claim 15  wherein said dissolved gas flotation arrangement further comprises a tank wall coupling connected to said consolidation tank, said tank wall coupling is said fluid mixture source for said dissolved gas flotation arrangement. 
     
     
       17. The system of  claim 16  wherein said consolidation tank further comprises a separator wall located adjacent said tank wall coupling for minimizing the amount of paint sludge material present in the fluid mixture position between a wall of said consolidation tank and said separator wall. 
     
     
       18. The system of  claim 15  wherein said dissolved gas flotation arrangement further comprises a diaphragm valve positioned between said aeration pump and said micro-aeration inlet, wherein said diaphragm valve prevents the back-up of fluids from said micro-aeration inlet toward said aeration pump. 
     
     
       19. The system of  claim 15  wherein said dissolved gas flotation arrangement further comprises compression tubing positioned within said micro-aeration inlet, wherein said compression tubing receives said dissolved gas mixture from said aeration pump and said compression tubing is positioned to disperse said dissolved gas mixture into a fluid stream of said micro-aeration inlet. 
     
     
       20. The system of  claim 15  wherein said consolidation tank further includes one or more aeration ports within said consolidation tank for receiving said dissolved gas mixture from said dissolved gas flotation arrangement. 
     
     
       21. The system of  claim 15  wherein further comprising a chemical injection port connected to said micro-aeration inlet for introducing chemicals that promote the coagulation and flotation of paint sludge onto the surface of the consolidation tank. 
     
     
       22. The system of  claim 15  wherein said weir is a floating weir having a suction box with two or more hinged doors each having a float member connected to said two or more hinged doors;
 two or more flotation cylinders operably connected to said suction box; and 
 a vacuum hose connected to said suction box for removing contaminate from said suction box. 
 
     
     
       23. The system of  claim 15  further comprising a contaminate treatment device for receiving contaminate from said contaminate chute. 
     
     
       24. The system of  claim 23  wherein said contaminate treatment device is one selected from the group comprising a self-dump hopper, conveyorized dryer and centrifuge. 
     
     
       25. The system of  claim 15  further comprising a separator wall positioned in said consolidation tank generally adjacent a tank wall coupling of the dissolved gas flotation arrangement. 
     
     
       26. The system of  claim 15  further comprising a chemical injection port connected to the micro-aeration inlet for injecting chemicals into the micro-aeration inlet. 
     
     
       27. The system of  claim 15  wherein the dissolved gas flotation arrangement further comprises one or more additional aeration ports connected to the consolidation tank for receiving dissolved gas from the dissolved gas flotation arrangement. 
     
     
       28. The system of  claim 15  wherein said dissolved gas flotation pump includes a diaphragm valve positioned between said aeration pump and said micro-aeration inlet for preventing the back-up of fluid mixture and dissolved gas mixture from the micro-aeration inlet.